适应沙漠环境的灰猎鹰是否比其同类更依赖食物获取水分?

IF 2.6 3区 环境科学与生态学 Q2 ECOLOGY Journal of Arid Environments Pub Date : 2024-07-19 DOI:10.1016/j.jaridenv.2024.105231
Jonny Schoenjahn , Chris R. Pavey , Gimme H. Walter
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引用次数: 0

摘要

要了解适应沙漠炎热干旱环境的内热物种的各种适应性,关键是要了解它们的饮水习惯。据说,即使在炎热干旱的环境中,包括灰隼属物种在内的猛禽不喝水也能生存,它们通过食物获取所需的水分(例如用于蒸发冷却)。灰隼(Falco hypoleucos)是一种罕见的澳大利亚特有鸟类,它在同类中的突出特点是其整个种群绝对局限于炎热干旱的环境中。这些鸟类的地表水源比中度环境中的同类鸟类更少、更不可靠。令人惊讶的是,我们只观察到两只灰隼在野外饮水。我们在此对这些记录进行描述,这是首次此类记录,并将其与长时间观察这些鸟类联系起来。我们认为,在适应沙漠环境的灰隼的生物学中,通过食物摄取水分所起的作用比灰隼属的任何其他物种都要大。进一步研究灰隼对食物摄取水分的依赖性,将有助于了解灰隼和其他动物在极端沙漠环境中生存的物理、生理、行为和环境特征之间复杂的相互作用。这个问题似乎与许多生活在沙漠中的动物物种有关,因为在气候不断变化的情况下,极端天气的频率和严重程度预计会增加。
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Does the desert adapted Grey Falcon rely on food for water more than its congeners?

To understand the various adaptations of endothermic desert adapted species to their hot arid environment it is crucial to understand their drinking habits. Birds of prey, including the species of the genus Falco, are said to be able to survive without drinking even in hot arid environments, and acquire the water they require (for evaporative cooling, for example) through their food. The Grey Falcon (Falco hypoleucos), a rare Australian endemic, stands out among its congeners in that its entire population is absolutely restricted to a hot arid environment. These birds have fewer and less reliable surface water sources than congeners in more mesic environments. Surprisingly, we have only two observations of Grey Falcons drinking in the wild. We describe these here, the first such records, and relate them to the extended periods spent observing these birds. We propose that water intake through food plays a greater role in the biology of the desert adapted Grey Falcon than in any other species of the genus Falco. Further investigations into the dependency of the Grey Falcon on food for its water will help to understand the complex interplay of physical, physiological, behavioural and environmental characteristics that allow these and other animals to persist in extreme desert environments. The issue appears relevant to many desert-living animal species because frequency and severity of weather extremes are predicted to increase under a changing climate.

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来源期刊
Journal of Arid Environments
Journal of Arid Environments 环境科学-环境科学
CiteScore
5.70
自引率
3.70%
发文量
144
审稿时长
55 days
期刊介绍: The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.
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